I was looking for a way to add Paypal buttons to articles. When the code is added to the article it gets stripped out. So I thought couldn't hurt to try.

Installed the editor button, module and plugin. Enabled the module and plugin, added the tags and code to the article and it worked. Tried a PayPal cart and it worked.

Just not sure what the editor button I installed was for as I can't find it anywhere in modules or plugins. But still an excellent job.